Mainstream Fiber Networks, LLC

Data as of 2026-07-26
BGP inherited
Cluster stats
Netblocks15 · 38,403 IPv4 addresses
IPv6 4 prefixes (largest 2607:1c80::/32)
Cluster ID214375500
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 13 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

6 weekly snapshots · JSON
19 -4 netblocks since 2026-07-05
2026-07-05 peak 23 2026-07-26

IP Ranges (15)

⬇ export CSV
CIDR Org name Registry Status Confidence
23.252.0.0/20 Mainstream Fiber Networks, LLC ARIN DIRECT ALLOCATION ● high
38.2.0.0/19 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
38.194.0.0/18 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
74.116.20.0/22 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
147.160.8.0/21 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
149.20.248.0/21 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
149.112.11.17/32 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
163.182.176.0/20 Mainstream Fiber Networks, LLC ARIN DIRECT ALLOCATION ● high
206.53.139.39/32 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
206.53.202.94/32 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
206.126.242.0/23 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
2001:504:45:f3e8::39/128 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
2001:504:61::48b7:0:1/128 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
2001:504:102::48b7:0:1/128 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
2607:1c80::/32 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high

IPv6 ranges (4)

CIDR
2607:1c80::/32
2001:504:102::48b7:0:1/128
2001:504:45:f3e8::39/128
2001:504:61::48b7:0:1/128

Network trust

what's this?
RPKI hygiene: C how networks compare →
78.9% of checked blocks have valid RPKI ROA coverage (15 of 19)
No discrepancies found among checked blocks.

NIC Handles

ABUSE8911-ARIN AS18615 AS18615 GABRI2-ARIN GABRI2-ARIN MFNL-2 NBL12-ARIN NBL12-ARIN SERPI-ARIN SERPI-ARIN ZLV3-ARIN ZLV3-ARIN +1 more